<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->

    <el-card>
      <!-- 卡片搜索区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" >
          <!-- 作用域插槽 :  此处小bug -->
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip> 
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed">
      <!-- 内容区域 -->
      <el-form :model="addForm" :rules="addFormRules"  ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible=false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules"  ref="editFormRef" label-width="70px">
        <el-form-item label="用户名" >
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email" >
          <el-input v-model="editForm.email" ></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile" ></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail=(rule,value,cb)=>{
      // 验证邮箱的正则表达式
      const regEmail=/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if(regEmail.test(value)){
        //合法的邮箱
        return cb()
      }
        cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile=(rule,value,cb)=>{
      // 验证手机号的正则表达式
      const regMobile= /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if(regMobile.test(value)){
        return cb()
      }
        cb(new Error('请输入合法的手机号'))
    }
    return{
      queryInfo:{
        query:'',
        // 当前的页数
        pagenum:1,
        // 当前每页显示多少条数据
        pagesize:2
      },
      userlist:[],
      total:0,
      // 控制用户对话框的显示与隐藏
      addDialogVisible:false,
      // 添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      //添加用户表单的验证规则
      addFormRules:{
        username:[
          {required:true,message:'请输入用户名',trigger:'blur'},
          {min:3,max:10,message:'用户名的长度为3~10个字符之间',trigger:'blur'}
        ],
        password:[
          {required:true,message:'请输入密码',trigger:'blur'},
          {min:6,max:15,message:'用户名的长度为6~15个字符之间',trigger:'blur'}         
        ],
        email:[
          {required:true,message:'请输入邮箱',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          {required:true,message:'请输入手机号',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible:false,
      // 查询到的用户信息
      editForm:{},
      // 修改表单的验证规则对象
      editFormRules:{
        email:[
          {required:true,message:'请输入邮箱',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          {required:true,message:'请输入手机号',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible:false,
      // 需要被分配角色的用户信息
      userInfo:{},
      // 所有角色的数据列表
      rolesList:[],
      // 已选中的角色id值
      selectedRoleId:''
    }
      
  },
  created(){
    this.getUserList()
  },
  methods:{
    // 获取用户列表数据
    async getUserList(){
      const {data:res}= await this.$http.get('users',{params:this.queryInfo})
        if(res.meta.status!==200) {
          return this.$message.error('获取用户列表失败!')
        }
        this.userlist=res.data.users
        this.total=res.data.total
          console.log(res);
        },
        // 监听pagesize 改变的事件
        handleSizeChange(newSize){
          // console.log(newSize);
          this.queryInfo.pagesize=newSize;
          this.getUserList();
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage){
          // console.log(newPage);
          this.queryInfo.pagenum=newPage;
          this.getUserList();
        },
        // 监听switch 开关的改变
    async userStateChanged(userinfo){
        console.log(userinfo);
      const {data:res}= await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if(res.meta.status!==200){
          userinfo.mg_state=!userinfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
    },
    //  监听用户对话框的关闭事件
      addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    //  点击按钮 添加新用户
    addUser(){
      this.$refs.addFormRef.validate(async valid =>{
        if(!valid) return;
        // 可以发起添加用户的网诺请求
      const {data:res}= await this.$http.post('users',this.addForm)
        if(res.meta.status!==201){
          this.$message.error('添加用户失败!')
        }
          this.$message.success('添加用户成功')
          // 隐藏添加用户的对话框
          this.addDialogVisible=false
          //重新加载用户列表数据
          this.getUserList()
      })
    },
    // 展示修改用户的对话框
    async showEditDialog(id){
      const {data:res}= await this.$http.get('users/'+id)
        if(res.meta.status!==200){
          return this.$message.error('查询用户信息失败!')
        }
        this.editForm=res.data    
        this.editDialogVisible=true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed(){
        this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo(){
        this.$refs.editFormRef.validate(async valid=>{
          if(!valid) return;
          // 发起修改用户的数据请求
          const {data:res}=await this.$http.put('users/'+this.editForm.id,{
            email:this.editForm.email,
            mobile:this.editForm.mobile
          })
          if(res.meta.status!==200){
            return this.$message.error('更新用户信息失败!')
          }
            // 关闭对话框
            this.editDialogVisible=false
            //重新获取数据表
            this.getUserList()
            //弹出成功提示框
            this.$message.success('更新用户信息成功')
        })
      },
      // 根据id删除用户信息
    async removeUserById(id){
        // 弹框询问是否删除
      const confirmResult= await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        }).catch(err=>err)
        // 如果确认删除 返回字符串 confirm
        //如果取消删除 返回字符串 cancel
        if(confirmResult!=='confirm'){
          return this.$message.info('已取消删除')
        }
      const {data:res}= await this.$http.delete('users/'+ id)
      if(res.meta.status!==200){
          return this.$message.error('删除用户失败!')
      }
          this.$message.success('删除用户成功')
          //刷新用户数据列表
          this.getUserList()
      },
    async setRole(userInfo) {
      this.userInfo=userInfo
      // 在展示对话框之前 获取所有角色列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status!==200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.rolesList=res.data
      this.setRoleDialogVisible=true
    },
    // 点击按钮 进行角色分配
    async saveRoleInfo() {
      if(!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
        {rid:this.selectedRoleId}
      )
      if(res.meta.status !==200) {
        return this.$message.error('更新角色失败!')
      }
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible=false
    }
  } 
}

</script>
<style lang="less" scoped>

</style>